Generic Cache for Golang
This is a simple cache implementation in Golang. It is a generic cache and can be used to store any type of data.
package gcache
import (
"testing"
"github.com/carlmjohnson/be"
)
type X struct {
Time int64
}
func TestCache(t *testing.T) {
key := "thekey"
x, err := Cache(key, func() (ret X, err error) {
return getSomething(10)
})
if err != nil {
t.Errorf("Error: %v", err)
}
y, err := Cache(key, func() (ret X, err error) {
return getSomething(20)
})
if err != nil {
t.Errorf("Error: %v", err)
}
be.Equal(t, x.Time, y.Time)
}
func getSomething(x int64) (resp X, err error) {
resp.Time = x
return
}
As you can see, x and y have equal values despite having different parameters. This is because they share the same key.